Optional: Place the RNeasy spin column in a new 2 ml collection tube (supplied), and discard the old collection tube with the flow-through.
可选步骤：将RNeasy旋转柱置于新的2ml收集管中，把旧的收集管连同其中的液体一同丢掉。
Optional: Place the RNeasy spin column in a new 2 ml collection tube (supplied), and discard the old collection tube with the flow-through.
可选步骤：将RNeasy旋转柱置于新的2ml收集管中，把旧的收集管连同其中的液体一同丢掉。
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